Litharge-derived compounds structurally based on layers of Cl- and Br–centered tetrahedra: Synthesis and structures of the new representatives of MX(ReO4) family (M=Ba, Pb$\mathsemicolon$ X=Cl, Br)

Авторы: Charkin Dmitri O., Siidra Oleg I., Plokhikh Igor V., Borisov Artem S., Markovski Mishel R.
Журнал: Solid State Sciences
Том: 114
Год издания: 2021
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 106576
DOI: 10.1016/j.solidstatesciences.2021.106576
Аннотация: Two new layered barium perrhenate halides, BaX(ReO4) (X = Cl and Br), were prepared and their structures were refined from single-crystal and powder data, respectively. Both compounds are isostructural to the previously reported BaCl(MnO4), exhibiting a matlockite (PbFCl)-derived motif. The structure of previously reported PbBr(ReO4) was also refined, in order to obtain a complete data set; it is similar to PbCl(ReO4). The structures of Ba and Pb compounds correspond to the centro- and non-centrosymmetric versions (pseudo-polymorphs) of the same motif corresponding to the alternation of [M2X2]2+ litharge-derived slabs and double sheets of perrhenate anions. Strong relationships exist to the structures of LnX(TO4) (X = Cl, Br; T = Mo, W) which are monoclinically distorted versions of the orthorhombic permanganates and perrhenates. Crystal chemistry and further perspectives of the compounds with litharge slabs constructed of Cl, Br, and I-centered tetrahedra are discussed.
Добавил в систему: Чаркин Дмитрий Олегович

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